Application of adhesive



' 'Sept.'22, 1936. c NEw 7 2,054,944

APPLICATION OF ADHESIVE Filed July 5, 1954' 3 Sheets-Sheet 1 llllm Sept.22, 1936. 'c. A. NEWHALL APPLICATION OF ADHESIVE Filed July 5, 1954 I 3Sheets-Sheet 2 A/VE/VTURJ P 1936- c. A. NEWHALL 2,054,944

APPLICATION ADHES IVE Filed July 5, 1934 3 Sheets-Sheet 3 Patented.Sept. 22, 1936 UNITED STATES APPLICATION OF ADHESIVE Carl A. Newhall,Peabody, Masa, asslgnor United Shoe Machinery Corporation, Paterson, N.J., a corporation of New Jersey Application July 5, 1934, Serial No.733,707

21 Claims.

This invention relates to the application of an adhesive to a piece ofwork, such as a shoe part, and is particularly concerned with a machineby means of which such an application of'adhesive may be effected. InLetters Patent of the United States No. 1,970,257, granted Aug. 14,1934, upon an application of M. W. Tetlow, concerning Methods ofsecuring together shoe parts and the like, there is described a.procedure in accordance with which a piece of textile materialcontaining a cellulose derivative (for example a cellulose ester such ascellulose acetate) is applied in the desired position upon a piece ofwork and the cellulose derivative is converted into an adhesive by asolvent applied to that material. The machine illustrated herein isadapted to carry out one or more steps of that method and an object ofthe invention is to provide a machine by means of which the Tetlowmethod maybe carried out expeditiously and the material appliedaccurately in the desired position.

As set forth in the Tetlow patent to which I have just referred, it hasbeen usual in attaching soles to shoesby meansof pyroxylin cement tocoat the overlasted marginal portions of the shoe uppers with theadhesive and to coat the marginal portion of the attaching surfaces ofthe soles. These coatingsof cement are then allowed to dry and later;just as the soles and shoes are to be brought together, it is usual toactivate the cement with a suitable softener or solvent. It will be seenthat this method of procedure involves the application of at least threeseparate coatings, each by a separate operation. It is proposed,therefore, in theTetlow patent to apply to only one of the shoe parts afibrous textile material, the fibers of which consist of a cellulosederivative which is softened and converted into an adhesive by means ofa suitable solvent for the cellulosic fibers. The two shoe parts arethen immediately brought together without allowing the adhesive to dry.The method is highly advantageous not only because it eliminates twooperations but also because it provides for accurately measuring theamount of cement and insures the uniform distribution of adhesive overthe area to be coated, at the same time enabling the positioning of theband of adhesive to be carried out readily.

The illustrated machine, in accordance with features of the invention,provides for the application of such a piece of textile materialprogressively to a piece of work. While it is recog-" nized that thepiece of textile material may be in the form of tape, braid or otherpreformed fabric,

the illustrated machine is constructed and ar ranged to apply aplurality of parallel strands of loosely woven yarn. Cellulose acetateyarn, commonly known as "acetate silk, has been found to be a suitablematerial which is readily obtainable. Accordingly, the material willhereinafter be referred to as acetate silk without intending thereby tolimit the claims or tosuggest of the application thereto of the band ofacetate silk and in a position where it will underlie said band and alsoto apply to the upper surface of the band a solvent of a low-viscositytype. The solvent of viscous type is employed not only to convert thecellulosic fibers but also to serve as an adhesive thereby quickly tosecure the acetate silk in the desired position on the work. Thelow-viscosity solvent serves to facilitate the rapid conversion of allthe fibers into an adhesive which will be substantially immediatelyavailable for the attachment, for example, of a shoe sole to the bottomof a previously lasted shoe.

Still another object of the invention is to provide an improved methodof applying an adhesive to a piece of work. In one aspect, the methodconsists in progressively and repeatedly hammering into contact with thework a piece of textile material containing a cellulose derivative whichhas been treated with a solvent. The method contemplates the use of anarrow strip of material which may readily be distorted in alldirections.

In another aspect, the method consists in securing to a piece of worksuch a strip of textile materialby means of an adhesiveand applying tothe textile material a solvent for the cellulose derivative containedtherein. Preferably, the adhesive will also contain a solvent for thecellulose derivative.

These and other features of the invention will now be described in thefollowing specification, reference being had to the accompanyingdrawings, inwhich Fig. 3 is a vertical section taken on the line IIIIIIof Figs. 6 and 10;

Fig. 4 is a detail view showing the feed foot;

Fig. 5 is an end elevation of the head of the machine Fig. 6 is ahoriozntal section on the line VI-VI of Fig. 5;

Fig. 7 is a rear elevation of the head of the machine showingparticularly the resetting and release mechanism for the cut-off knife;

Fig. 8 is a fragment showing the pull-off mechanism in operation;

Fig. 9 is a plan on a large scale showing the relation of the presserfoot and the presenter to a shoe sole; I

Fig. 10 is a horizontal section on the line XX of Fig. 5, and

Fig. 11 is an end elevation, on a large scale, of that portion of thehead of the machine which is near the work.

The machine provides for the progressive feeding of a piece of work,such as a sole, and the continuous application to the margin of the workof a series of strands of acetate silk yarn fibrous by nature, which arestuck in position on the sole and are treated by a solvent to transformthe yarn into a cement which may be utilized for attaching the sole to ashoe. At the end of the operation upon a piece ofwork,;the strands ofyarn are cut off and the unused ends of the yarn are caused to stick outbeyond the presenting mechanism to facilitate their attachment to thesucceeding piece of work. I

The machine comprises a frame I!) having a hollow overhanging arm l2 anda supporting arm l4 upon which is mounted a work table l6. Projectingthrough a slot in this table is an idle work supporting roll 18 and onthe: table is mounted an edge gage 20. The edge gage 20 is provided withtwo humps or bulges 22 and 24 (Fig. 9) against which the work rests andwith which it coacts in the same manner as 'a similar gage described inan application Serial No. 692,307, filed October 5, 1933 inmy name, re-

lating to machines for applying activating liq-.

uids to cemented shoe parts. An overhanging flange 26 (Fig. 7) on thisgage, turned up at 21 (Figs. 5 and 9) to facilitate entering a new pieceof work, assists in holding the work against the table. The generalarrangement of the work feeding mechanism is similar to that illustratedin Letters Patent of the United States No. 1,304,472, for Improvementsin folding machines, granted May 20, 1919, on the application of P. R.Glass and reference may be had to'this patent for a description of suchparts of the .machine as are not fully described herein.

Feeding of the work is accomplished by mechanism in the head of themachine and comprising an oscillating feed foot 30 (Fig. 4) operatingupon the margin of the work, such as a sole 200 shown in Fig. 9, in adirection to cause the sole to be held in contact with the edge gage 20,thereby effecting a substantially automatic presentation of the marginof thesole to the op-- erating tools. With this feed foot cooperates areciprocating presser foot 32 which holds the work against the tableduring the intervals be tween the operation of the feed foot. The feedfoot 30, which has a serrated lower end and an enlarged upper end 36(Fig. 11) is clamped upon the lower end of a feed foot bar 34 by a screw'38. To produce a four-motion feed, this feed foot bar 34 is mounted foroscillatory and up-an'ddown movement in a recess formed in the rearrying slide 44 (Fig. 10).

face of a cap 40 secured to the end of the frame arm I2 by screws 42(Fig. 5). A slideway is formed partly by the cap and partly by a recessin the end of the arm I 2 to receive a pivot-car'- This slide isadjustably positioned, as will be described, and forms a bearing for apivot stud 46 (Figs. 1 and 10) integral with a sleeve 48 in which thefeed rod 34 slides up and down. The upper endof the rod passes through abore in the side of a cam follower frame 50 (Fig. 5). This frame coactswith a cam 52 secured to a drive shaft 54. Interposed between the bottomof the cam follower frame 50 and a collar 56, clamped to the feed footrod 34, is a spring 58 tending always topush the feed foot 30 intoengagement with the work. The cam 52 imparts to the frame 59 a sidewiseswinging movement and an up-and-down movement, the feed foot rod 34being lifted by engagement of the frame 59 with a block 60 secured tothe upper end of the rod 34. This block has a pin 62 which cooperateswith the frame 50 to prevent twisting of the rod 34. Rotation of the cam52 is thus effective to impart a four-motion feed to the foot 30. Theextent of the feeding movement is determined by the position,.heightwise of the head, of the pivot 46 journalled in the slide 44 andthis latter may be adjusted manually by a bell crank 64 (Fig. 1) mountedinside the frame upon a stud 63 and held in position by a pin 66 passingthrough one of a series of apertures 61 provided in the frame. The lowerarm of the bell crank is connected by a short link to the slide 44.

The presser foot 32 is L-shaped (Fig. 9) and is mounted upon a bracket10 by means of a substantially horizontal pivot H, extending in thegeneral direction of the line of feed, thus allowing the foot to contactfully with the margin of a sole, regardless of whether the margin isflat or beveled. The bracket 10 (Fig. 5) has a head 12 (Fig. 6) which isclamped to the lower end of a sleeve 14 by means of a pinch screw 16. Itwill be seen from Fig. 3 that the sleeve 14 is slidable in a bore formedin the cap 40 and that it is prevented from turning with respecttcthecap by a spline 11. A presser-foot rod has a reduced lower end 8|extending through the sleeve 14 and provided with a retaining screw 82at its lower end, while a spring 84 surrounding this reduced extensionis interposed between a shoulder on the rod 80and the upper end of thesleeve 14 thus tending to hold the presser foot in contact with the workuntil it is lifted out of engagement therewith by the head of the screw82 coming into contact with the bottom of the sleeve 14. To lift thepresser foot, the upper end of the rod 80 is secured to a cam followerframe 86 (Fig. 5) which surrounds an eccentric 88 attached to the end ofthe drive shaft 54. Upon rotation of the drive shaft, this eccentric 88alternately lifts the presser foot away from the work and then allows itto move forcibly into engagement with the work under the pressure of thespring 84.

It will be noted that the block '12 has a lateral extension or ear 90(Figs. 6 and?) which is re-' ceived in a slot 92 (Fig. 7) in the rearface of the cap 40 to facilitate lifting of the presser foot by, meansof a lever 94 having a finger piece 96 (Fig. 1), this lever beingpivoted upon a stud 98 (Fig. 7) at the lower end of the cap 48. When thepresser foot is raised manually by a'depression of the finger piece 96,the outer end of the lever 94, which is received in a slot in the cap48, engages the under side of the car 99 upon the presser foot bracketand lifts the foot out of engagement with the work to a position whereinit is held by a spring pressed latch I (Fig. 1). This latchf may bereleased by the actuation of a treadle rod I02 which is used to startthe machine. To this end, the treadle rod is connected to a bell crankI04, to the upper end of which is secured a rod I06 extending to a leverI'08 pivoted on the stud- 63 on which the bell crank 64 is mounted. 0nthe side of this lever I08 is a pivoted block slidably receiving a rodIIO pivoted to the upper end of the latch I00. A nut upon the end of therod H0 engages the pivoted block on the side of the lever I08 thereby toeffect a positive disengagement of the latch I00 when the treadle rodI02 is raised. A spring is interposed between the other side of thispivoted block and a shoulder on the rod II 0 thus allowing anindependence of movement of the latch with respect to the block'on thelever I08. The bell crank I04 is pinned to a pivot rod II2 passingthrough the frame I0 and secured by a set screw on the outer end of thisrod H2 is a collar I I4 in which is threaded a clutch actuating studII6. A pin clutch II8. of any well-known type is interposed between thedrive shaft 54 and a pulley I20, and a clutch actuating stop arm I22.which is normally pulled toward the shaft by a coiled spring I24, isprovided with a depending cam surface I26 with which the pin II6contacts as the treadle rod I02 is raised thereby to remove the stop armI22 and allow the clutch to be closed and the machine to operate.

The cellulosic material which is to be applied and transformed intocement may be supplied in the form of tape, braid, or, as hereinillustrated,

in separate strands of loosely twisted yarn of .this purpose, I havefound particularly satisfactory the cellulose acetate yarn which iscommercially available under the trade name Acetate Silk. V

In the illustrated machine, six strands of yarn I30 (Fig. 1) aresupplied from spools I32 carried upon a suitable support, I34 attachedby, cap

. screws I36 (Fig. to the rear face of the overhanging frame arm I-2.The strands pass from the spools loosely through a single guideopeningI31 formed in an end I38 of one-arm of a pull-'- oif. mechanism, to bedescribed, and through individual openings in a guide I40 (Figs. 1 and5) attached to the frame. The strands then pass through individualopenings in an upper flange I42 and a'lower flange' I 44 of a combinedguide and presenter I46 which is pivotally mounted upon a stud I48 inthe feed foot block 36; This presenter is notched at I50 (Figs. 4 and 5)to cooperate with a pin. I52 thereby to allow limited pivotal movementabout the stud I48 and is ro-l tated clockwise, as-viewed in Figs. 5 and11, by a spring I54 coiled around the stud I48 and having an end whichengages a pin I56 (Figs; 6 and ll) on'the presenter. In general, thepresenter operates to deliver several parallel strands of yarn to thesole in exactly the desired position with respect to the edge of thesole.

On this presenter the perforated forward flange I44 isset at an acuteangle to the face of the presenter plate I46 in order that it may besubstantially at right angles (Fig. 9) to ,the line of feed asdetermined by thebulges 22, 24 of the edge gage 20. This is particularlyimportant when rounding sharply curved portions, such asthe toe, so thatthe line of the perforated flange I 44 shall then be substantiallyradial with respect to said curved portion, thus insuring an evenspacing of the strands along the margin of the sole and providing astripe of resulting cement which is of substantially uniform width andis uniformly spaced from the edge of the sole for reasons set forth indescribing the position of the nozzles of the machine for applyingactivating liquids described in my above mentioned application. Thepull-off mechanism operates during the forward feeding movement ofthefeed foot 30. After this, the presser foot 32 descends and clamps thestrands against the sole and then the feed foot carrier rises and movesto the right, as seen in Fig. 5, drawing the guidefianges I42 and I44 ofthe presenter along the loose strands of yarn preparatory to thereengagement of the feed foot with the sole in a new position. At thebeginning of the operation, the projecting ends I60 (Fig. 11) of thestrands I30 are pinched beneath the presser foot 32 and the yarn isdelivered to the sole 200 by the oscillating movement of the presenterwith the feed foot 30.

In order that the strands of yarn between the spools and thepresenter'may be relatively loose so that there will be no danger of thebreakage of the strandsduring the oscillation of the presenter,

'the machine is provided with a pull-off mechanism,- mentioned above,which intermittently draws the strands down from the spools. Thismechanism, as best shown in Figs. 5 and 8,-'comprises an arm I62 pivotedupon a screw stud I64 threaded in the cap 40 and with the turned-overend portion I38 apertured at I31 to form a guide as has been alreadydescribed. This arm is provided with a wear piece I66 which is held incontact with a cam I68 by a spring I10. The cam I68 is secured upon theend of the drive shaft 54.

Cooperating with this arm I 62 is another arm I12 which is also pivotedupon the stud I64. The upper end of this'arm normally rests against astop I14 screwed to the front side of the arm I2 and is held thereresiliently by a spring I 16. Upon the arm I62 is a cross-bar or gripperI18 (Fig. 2) and upon the arm I12 is a grooved cross flange or gripperI00. Two spaced pins I82 fastened in the cross-bar I18 pass looselythrough holes in the flange I80. The strands of yarn, passing. throughthe guide opening I 31 in the upper end of the arm I62, are threadedbetween the pins I82 and thence through the openings in the fixed guideI40. As the cam I 68 rotates, it

Fig. 8, thus pulling off the-yarn fromjthe spools and providing someslack which will be taken up by the presenter I46 as the work is fedforward. The cam I60 alternately moves the arms I62,".,I12

-into the position shown in Fig. 8 and then allows them to drop backinto the position shown in Fig. 5 where the yarn is not gripped.

After apiece of work has been completed, the strands which have beenattached to the sole must be severed from the supply strands andthis isaccomplished by means of a knife I90 pivotally mounted upon areciprocating carrier I92 (Fig. 3) secured by a screwto the lower end ofa rectangular knife bar I94 (Fig. 10). The pivotal mounting allows theknife to contact perfectly across the margin of the 'sole regardless ofwhether the sole is beveled or reduced at that point or is fiat. Theknife bar I El I is received in .a rectangular groove in the rear faceof 'the cap 46 and rests against the end face I96 of the arm I2. Theknife bar I94 has a recess to receive a spring I98 (Fig. 3) abutting aplunger 262,

the upper end of. which rests against a stop flange 264 extendinginwardly from a block 266 (Figs. 5 and '7) held on the head of themachine by a screw 268. This spring I98, therefore, tends to push theknife I96 into contact with the work. In order that the knife bar may beraised to compress the spring I68, the cap 46 is cut away at 2I6 (Fig.7) to expose a laterally projecting stud screw 2I2 adapted to be raisedby engagement with the cup 2 i l at the upper end of a finger 2I6secured by a screw M8 to the outer end of the hand lever 94. This finger2E6 is pulled inwardly the finger piece 96 on the lever 94 is depressed,the cupped. portion 2I4 of the finger 2I6 will engage the stud 2I2 andraise the knife bar. The knife bar will then, be held in upper positionby a latch 222 pivotally mounted in a slot (not shown) in the upper endof a block 224 attached to the cap 46. tion by a spring 226 attached atits upper end to the block 266 and at its lower end to the latch. A pin226 upon the finger 2 I6 is adapted to engage the upper side of thelower arm of the latch 222 thereby to release the latch when the fingerpiece 96 on the lever 94 is moved upwardly thereby pulling down on thepin 228. The machine stops with the feed foot raised and the presserfoot down. The operator then moves the finger piece 96 upwardly torelease the knife bar and cause'the knife to sever the strands of yarn.As the knife bar descends, a rearwardly projecting finger 236 (Fig. 5)integral with the knife carrier I92 engages the presenter I46 and, bysuitably shaped cam surfaces on these two parts, moves the presentercounterclockwise against the tension 'of the spring I54 until the lowerside of the notch I56 engages the pin I52. This happens just before theknife cuts oif the strandsand serves to insure that there shall beprojectingends I60 of the strands of yarn I30 beyond the lower flange ofthe presenter ready for engagement beneath the I presser foot, as shownin Fig. 11, as the next piece 64 to-rcset the knife and in so doing willraise the 4 presser foot, by engagement of the lever 94 with the lateralprojection 90 upon-the presser foot carrier, as previously described,against the tension of the spring 64.

It is desired to cause the. strands of yarn to stick to the solesufiiciently, as soon as they are brought in contact therewith, to makesure that the strands are held in the proper position 'on the sole wherethey have been laid. It is also desired to soften or gelatinize thestrands rapidly so that they are converted into a so-called one-wayadhesive suitable for immediately attaching a sole to a lasted shoefThese results can best be obtained by the application of a sol- Thislatch is urged into operative posivent, renderedviscous by the presencein it of a cementitious compound, to the roughened flesh surface of thesole, just ahead of the application of the strands of yarn thereto,thereby securing immediate adhesion of the yarn to the sole and alsopartly softening the acetate silk yarn, and by applying to the uppersurface of the strands of yarn a low-viscosity solvent which willreadily dissolve and gelatinize the cellulose ester of the yarn. Anillustrative composition of the viscous type of softener, as disclosedin Letters Patent of the United States No. 1,959,321, granted May 15,1934, upon an application filed in the name of Walter H. Wedgercomprises Nitrocellulose of MOO-seconds viscosity 46 grams Denaturedalcohol 18 cc. Acetone 900cc.

with a viscous solvent by removing the plug.

Air under pressure is supplied from any convenzient source through apipe 238, a pressure reducing valve 246 having an adjusting handle MI,and past a pressure measuring gage 242. At the outlet end of thereceptacle an outlet pipe '244 is provided with a turn valve 246 and thepipe terminates in a small capillary tube 248 of greatlyreduceddiameter. The bore of this tube 248 will be of the order offorty-thousandths of an inch. With a tube of this size, there will be nodripping of the solvent when the valve is closed and the frictionbetween the solvent and the walls of the tube will be sufiicient torender the pressure uniform so that the quantity extruded upon the solewill be of a known amount. A receptacle 256 for a low-viscosity solvent,such as acetone, is structurally similar to a sight-feed oil cup. Thisreceptacle is supported by a bracket 252 attached to the container 232and has an outlet pipe 254 (Figs. 9 and 11) which terminates above thestrands of yarn between the presenter I 66 and the knife I96 and atabout the point where the yarn isfirst brought into contact with thesole by the presser foot 32 but just to the rear thereof. Thislow-viscosity solvent will soften the fibers of the yarn and convertthem rapidly into a cement by means of which the sole may be attached toa shoe. Control of the quantity of solvent delivered to this tube 254 iseffected by turning a knurled sleeve 256 (Fig. 1) at the top of thereceptacle 256 as in similar oil cups and the flow may be allowed'or maybe shut oif by raising or lowering a needle valve 256,-the upper end ofwhich is pivoted to a lever 26D fulcrumed on a bracket at the top of thereceptacle. The valves 246 and 258 mayconveniently be controlled byconnecting them to an actuating rod 262 to which may be attached atreadle rod 264. This actuating rod 262 is pivotally connected to an arm266 secured to the turn valve 246 while needs only to be raised a smallfraction of an. inch. Control of the quantity of viscous solventextruded may be effected by turning the handle 24I upon the reducingvalve 240 and thereby varying the air pressure applied to the solvent inthe receptacle 232. L

In the use of the machine, the operator will present a piece of work,such as a sole 260, on the table I 6 with its edge against the gage 20.At this time the feed foot will be in raised position, the machinehaving been brought to rest in the position shown in Fig. 5 andthepresser foot will be held in raised position against the tension of thisspring by the latch I00. The operator will then step on the treadleattached to the rod 264 toopen the valve of the solvent containers. andsubstantially simultaneously will actuate a treadle to raise the rod I02thereby to release the latch I and to close the clutch and start therotation of the drive shaft 54. The forward movement of the sole as itis pushed over the table I6 in initially presenting it to the machinewill have straightened out the loose ends I60 of the strands of yarn toa position where they will lie beneath the presser foot. 32 so that whenthe presser foot is dropped it will clamp the ends'of these strandstemporarily against the sole causing them to be tacked by thelow-viscosity solvent from the receptacle 250 and the presenter abovethe sole several parallel strands of yarn.

ready for attachment thereto. The yarn will become only partly softenedat the time whenthe presser foot 32 engages it but the hammering actionof the presser foot will serve to force the yarn firmly into contactwith the roughened sole coated with the viscous solvent and at the sametime slightly to flatten the yarn wet by the lowviscosity solventsupplied through the tube 254. ,This action will continue until so muchof the margin of the sole has been treated as is desired. Theapplication of the yarn will be startedapproximately at the heel breastline upon one side and will continue around the toe of the sole up toapproximately the heel breast line on the other side of the sole. Whenthis stopping point is reached, theoperator will release the treadlesattached to the rods 264 and I02 stopping the flow of solvent from thereceptacles and the rotation of the drive shaft 54. The action of theclutch H8 will be to stop the drive shaft in a position such that thepresser foot is down and the feed foot is raised and moved back towardthe operator ready to descend for the next feeding cycle, as shown inFig. 5. The operator will then cause an upward movement of the fingerpiece 96 to release the latch 222 allowing the knife I90 to drop againstthe partially softened threads and to cut them in two. As the knifedescends and before it cuts the yarn, it will push aside the presenterI46 and draw out the free ends I60 beyond flange I44 andwill leaveprojecting .dry ends of i the flange I44 of the presenter because atthat time the yarn is still attached to the portion on the sole. Thiswill prevent any possible sticking of the strands in the perforations ofthe guide such length that the operation may be started immediately uponthe next sole without any effort on the part of the operator. Theoperator will then press down upon the finger piece 96, raising thepresser foot through the engagement of the rearwardly projecting ear 90and resetting the knife. The presser foot will be held up in raisedposition by the already-in-position latch I00 while the knife will beretained by the latch '222- Having described my invention, What I claimas new and desire to secure by LettersPatent of the United States is;

1. In combination, means for treating a piece of textile materialcontaining a cellulose derivative with a solvent for the cellulosederivative thereof thereby to convert at least a portion of the textilegressively and repeatedly hammering the treated textile material intocontact with the work as the material is presented to the work.

2. In a machine for applying an adhesive to a piece of work, means forpresenting thereto a piece of textile material containing a cellulosederivative, means for applying to the textile material as it is beingpositioned upon the work a solvent for the cellulose derivative thereof,and means adjacent to said presenting means movable toward and away fromthe work for substantially immediately pressing the material intocontact with the work.

3. In combination, work feeding means including a presser foot movabletoward and away from the work, means for supporting a supply ofelongated textile material containing a cellulose derivative, means forpresenting said textile material to the work in advance of the presserfoot, and means for supplying a solvent for the cellulose derivative inadvance of the presser foot whereby themovement of the presser foottoward the work causes the softened material to stick to the work.

rivative, means for applying a solvent for said cellulose derivative tosaid textile material in advance of the presser foot whereby thecellulose derivative is converted into an adhesive which is pressed intocontact with the work by the presser foot.

5. In'combination, means for applying progressively to a piece of workelongated textile material comprising a cellulose derivative, means forsupporting a supply of the textile material, a guide interposed betweensaid supply and said applying means whereby to position the textilematerial with respect to the'work, a movable cutter, means for movingthe cutter, and means operated by the movement of said cutter forcausing an unused length of textile material to project through saidguide. i 1 1 6. In combination, work feeding means comprising areciprocating presser foot and an oscillating feed foot, means forsupporting a supply of textilematerial, a guide for the materialresiliently mounted upon said feed foot, and means operable at thetermination of the feeding movement for moving said guide upon the feedfoot to 7 a movable cutting-off knife, and means operated by movement ofsaid knife for moving saidguide away from the presser foot to cause anunused length of the material to project beyond the guide.

8. In combination, in a machine. for applying elongated textile materialto a piece of work, a presser foot spring-urged into engagement withthe' work, a latch for holding said presser footout of engagement withthe work, a cutting-off knife spring-urged into engagement with thework,a latch for holding saidknife out of engagement with the work, andoperator'controlled means for lifting said presser foot and resettingsaid knife. 4

9. In combination, in a machine for applying elongated textile materialto a piece of work, a-

latch for holding said knife out of engagement with the work, andoperator controlled means for lifting said presser foot and resettingsaid knife, said operator controlled means being constructed andarranged also to release said knife on movement in the oppositedirection.

10. In combination, means for applying elongated textile materialprogressively to a piece of work, a spool for supporting a supply oftextile material, a guide positioned adjacent to the work for presentingthe textile material in a predetermined relation to the edge of thework, means for adhesively securing the textile material to the work, anintermittently operated pull-ofl acting upon the textile materialbetween the spool and the guide to slacken the material, and means tooperate said pull-oil as the material is applied.

11. In' combination, a work support, an edge guide, an intermittentlyoperated presser foot, a feed foot, means for imparting a four-=motionfeed to said foot, means forsupporting a supply of elongated textilematerial containing a cellulose derivative, a guide for said textilematerial mounted on said feed foot, a pull off interposed between thesupply supporting means and the guide, and means for delivering asolvent for the cellulose derivative to transform said textile materialto an adhesive as it is applied to the work.

12. In a machine for applying an adhesive to a piece of work, means forpresenting thereto a piece of textile material containing a cellulosederivative, means for appying an adhesive to one of said pieces tosecure the'textile material in position upon the work, and means forapplying a solvent for the cellulose derivative to the textile materialthereby to convert it into an adhesive.

13. In a machine for applying an adhesive to a piece of work, means forguiding to the work a piece of textile material containing a cellulosederivative, and a pluralty of applying means positioned upon oppositesides of the textile material as it is presented to the work andconstructed and arranged to apply an adhesive to one of said pieces in aposition between the pieces and to apply a' solvent for the textilematerial in an'-- other position.

14. In a machine for applying a strip of adhesive to a piece of workbetween which and the machine relative movement may be produced, a guidefor directing to the work a piece of textile material containing acellulose derivative, and a plurality of nozzles diiierently positionedwith respect to the textile material and arranged to deliver thereto anadhesive and a solvent for the cellulose derivative.

15. In combination, means for applying elongated textile materialcontaining a cellulose derivative progressively to a piece of work,means for delivering to the work in advance of the textile material aviscous solvent for said cellulose derivative, and means for applying tothe upper surface of the textile material as it is applied to the work alow-viscosity solvent for the cellulose derivative whereby the textilematerial is secured to the work by the viscous solvent and istransformed into an adhesive by the combined action of the viscous andthe low-viscosity solvents.

16. The method of applying an adhesive to a' piece of work whichconsists in treating a strip of textile material containing a cellulosederivative in a fibrous, readily soluble form with a solvent for thecellulose derivative thereby convertmg at least a portion of the textilematerial into an adhesive, and progressively and repeatedly hammeringthe textile material into contact with the work as it is presentedthereto.

17. The method of applying an adhesive to a piece of work which consistsin presenting thereto a narrow piece of textile material containing acellulose derivative in a fibrous, readily soluble form and which isreadily distortable in all directions, applying a solvent for thecellulose deriv-' ative thereof to the textile material while it isbeing positioned upon the work, and substantially immediately pressingthe material into contact with the work.

18. The method of applying an adhesive to a piece of work which consistsin presenting thereto a textile material containing a cellulosederivative, securing the textile material in position upon the work bymeans of an adhesive, and applying a solvent for the cellulosederivative to convert it into an adhesive. V

19. The method of applying an adhesive to a piece of work which consistsin presenting thereto a textile material containing a cellulosederivative, securing the textile material in position upon the work bymeans of a viscous solvent for the cellulose derivative thereof, andapplying additional solvent to facilitate the conversion of thecellulose derivative into an adhesive.

20.. The method of applying an adhesive to a piece of work whichconsists in presenting to the work a piece of textile materialcontaining a cellulose derivative, applying a viscous solvent for saidcellulose derivative between the textile material and the work, therebypositioning said textile material upon the work, applying alow-viscosity solvent for the cellulose derivative to the alreadypositioned textile material, and substantially immediately pressing thematerial into contact with the work.

21. The method of applying an adhesive to a piece of work which consistsin presenting to the work a piece oftextile material containing acellulose derivative, coating that portion of the work which is to beoccupied by the textile material with a viscous solvent for thecellulose derivative of said material, thereby to secure said textilematerial in position upon the work, and applying a. lovl eviscositysolvent for the cellulose derivative to the already positioned textilematerial.

CARL A.

